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    SPREAD-SPECTRUM SYSTEM AND METHOD
    13.
    发明申请
    SPREAD-SPECTRUM SYSTEM AND METHOD 审中-公开
    传播系统和方法

    公开(公告)号：WO1996021295A1

    公开(公告)日：1996-07-11

    申请号：PCT/US1995016905

    申请日：1995-12-22

    Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

    Inventor： INTERDIGITAL TECHNOLOGY CORPORATION ,  LOMP, Gary, R.

    IPC: H04K01/00

    CPC classification number: H04W52/04 ,  H03G3/3042 ,  H03G3/3047 ,  H04B1/69 ,  H04B1/707 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/7115 ,  H04B1/712 ,  H04B2201/70707 ,  H04J13/00 ,  H04J13/0003 ,  H04J13/10 ,  H04J13/16 ,  H04W52/22 ,  H04W52/221 ,  H04W52/225 ,  H04W52/228 ,  H04W52/36 ,  H04W52/362 ,  H04W52/367 ,  H04W52/52 ,  H04W52/54

    Abstract: A spread-spectrum system and method for providing high-capacity communications through multipath compensation, for automatically and adaptively controlling a mobile user's spread-spectrum transmitter power level when operating in a cellular communications network, and for providing variable or adjustable signal bandwidth capabilities in a spread-spectrum transmitter. Multipath compensation is accomplished using a plurality of filters (121-126), a plurality of multipliers (111-116), and a plurality of weighting devices (131-136), coupled through a first adder (120) and a second adder (130) to a decision device (150). The adaptive power control device of the present invention includes a base station having an AGC amplifier (228), despreader (231), comparator (239), power amplifier (237), delta modulator (235), multiplexer (234), combiner (236) and power measurement device (233). The adaptive power control device also includes a mobile station having a despreader (334), demultiplexer (339), demodulator (340), decision device (345), accumulator (346), step size algorithm device (344), variable gain device (341) and transmitter (342). The variable bandwidth device includes a chipping sequence generator (161), impulse generator (165), product device (164) and filter (166).

    Abstract translation: 一种用于通过多路径补偿提供大容量通信的扩频系统和方法，用于在蜂窝通信网络中操作时自动和自适应地控制移动用户的扩频发射机功率电平，以及用于在 扩频发射机。 多路径补偿使用多个滤波器（121-126），多个乘法器（111-116）和多个加权装置（131-136），通过第一加法器（120）和第二加法器（ 130）连接到决策设备（150）。 本发明的自适应功率控制装置包括具有AGC放大器（228），解扩器（231），比较器（239），功率放大器（237），增量调制器（235），多路复用器（234），组合器 236）和功率测量装置（233）。 自适应功率控制装置还包括具有解扩器（334），解复用器（339），解调器（340），判定装置（345），累加器（346），步长算法装置（344），可变增益装置 341）和发射机（342）。 可变带宽设备包括切片序列发生器（161），脉冲发生器（165），产品设备（164）和滤波器（166）。

    POWER CONSUMPTION CONTROL METHOD AND APPARATUS FOR A COMMUNICATION SYSTEM SUBSCRIBER UNIT
    14.
    发明申请
    POWER CONSUMPTION CONTROL METHOD AND APPARATUS FOR A COMMUNICATION SYSTEM SUBSCRIBER UNIT 审中-公开
    用于通信系统订户单元的功耗控制方法和装置

    公开(公告)号：WO1996003811A1

    公开(公告)日：1996-02-08

    申请号：PCT/US1995008956

    申请日：1995-07-17

    Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

    Inventor： INTERDIGITAL TECHNOLOGY CORPORATION ,  ESTULIN, Walter ,  HUAH, Jim, J. ,  KAIWELL, John ,  KINNEY, Kevin ,  LEMMO, Mark, A. ,  REGENSBURG, Michael, W. ,  VANDERSLICE, William, T., Jr.

    IPC: H04B01/40

    CPC classification number: H04W52/0293 ,  H04B1/036 ,  H04B1/1615 ,  H04B1/40 ,  H04M1/73 ,  H04M19/02 ,  H04W52/0235 ,  H04W52/0283 ,  H04W52/029 ,  Y02D70/40

    Abstract: A subscriber unit (10) of a time division multiple access (TDMA) radiotelephone system is reconfigured in each time slot to a power consumption tessellation in which circuit components (12, 13, 21, 29, 56, 57, 58) not needed for communication signal processing in that time slot are powered down. In order to minimize the extent of circuitry that must be provided to distribute power consumption control signals, techniques such as clock frequency control (26, 30, 70) or power down commands (31, 67, 68) are utilized to modify controlled circuit component power consumption without actually controlling power supply circuits. Programmable ring frequency logic (20) controls the frequency of a ringing signal generator (58), and a high frequency ring control signal (70) is switched on and off in the cadence of ringing operation. An expansion header is provided to enable serving plural subscriber loop circuits with the same radio equipment for reducing per line power consumption.

    Abstract translation: 时分多址（TDMA）无线电话系统的用户单元（10）在每个时隙被重新配置为功耗曲细图，其中不需要电路组件（12,13,21,29,56,57,58） 该时隙中的通信信号处理被断电。 为了最小化必须提供用于分配功率消耗控制信号的电路的程度，使用诸如时钟频率控制（26,30,70）或掉电命令（31,67,68）之类的技术来修改受控电路组件 功耗不用实际控制电源电路。 可编程振铃频率逻辑（20）控制振铃信号发生器（58）的频率，并且在振铃操作的节奏中开启和关闭高频环控制信号（70）。 提供扩展头，以使得能够使用相同的无线电设备为多个用户环路电路提供服务，以减少每线路的功耗。

    PHASED ARRAY SPREAD SPECTRUM SYSTEM AND METHOD
    15.
    发明申请
    PHASED ARRAY SPREAD SPECTRUM SYSTEM AND METHOD 审中-公开
    相位阵列传播系统和方法

    公开(公告)号：WO1996000991A1

    公开(公告)日：1996-01-11

    申请号：PCT/US1995008562

    申请日：1995-06-16

    Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

    Inventor： INTERDIGITAL TECHNOLOGY CORPORATION ,  SCHILLING, Donald, L.

    IPC: H01Q03/22

    CPC classification number: H04B7/0894 ,  G01S3/42 ,  H01Q3/22 ,  H01Q3/26 ,  H01Q3/2605 ,  H01Q3/2682 ,  H04B1/1081 ,  H04B1/69 ,  H04B1/707 ,  H04B7/084 ,  H04L1/06

    Abstract: A phased array spread-spectrum system maximizes signal strength of a spread-spectrum signal with multipath. RF/IF section (21) receives a plurality of spread-spectrum signals. RF/IF section (22) receives a plurality of phased versions of the plurality of spread-spectrum signals. Digital delay devices (27, 28) delay the received spread-spectrum signals with respect to their phased versions by a plurality of delays. Summers (29, 30) combine the delayed spread-spectrum signals and their phased versions as a plurality of combined signals. Despreader (31) despreads the combined signals as a plurality of despread signals. Magnitude device (32) generates a plurality of magnitude values from the despread signals. Shift register (33) stores a plurality of previous-magnitude values and present-magnitude values previously and presently generated by the magnitude device (32). Comparator (34) compares the previous-magnitude values to the present-magnitude values and outputs a plurality of comparison signals. Digital delay devices (27, 28), responsive to the comparison signals, lengthen or shorten the plurality of delays.

    Abstract translation: 相控阵扩频系统通过多路径使扩频信号的信号强度最大化。 RF / IF部分（21）接收多个扩频信号。 RF / IF部分（22）接收多个扩频信号的多个相位版本。 数字延迟装置（27,28）通过多个延迟相对于它们的相位版本延迟接收的扩频信号。 Summers（29,30）将延迟扩频信号及其相位版本组合为多个组合信号。 解扩器（31）将组合信号解扩展为多个解扩信号。 幅度设备（32）从解扩信号产生多个幅度值。 移位寄存器（33）存储由幅度设备（32）预先和目前产生的多个先前幅度值和当前幅度值。 比较器（34）将先前幅度值与当前幅值进行比较，并输出多个比较信号。 数字延迟装置（27,28）响应于比较信号，延长或缩短多个延迟。

    CDAM/TDMA SPREAD-SPECTRUM COMMUNICATIONS SYSTEM AND METHOD
    16.
    发明申请
    CDAM/TDMA SPREAD-SPECTRUM COMMUNICATIONS SYSTEM AND METHOD 审中-公开
    CDAM / TDMA传播频谱通信系统和方法

    公开(公告)号：WO1993014590A1

    公开(公告)日：1993-07-22

    申请号：PCT/US1993000055

    申请日：1993-01-12

    Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

    Inventor： INTERDIGITAL TECHNOLOGY CORPORATION ,  SCHILLING, Donald, L.

    IPC: H04N01/00

    CPC classification number: H04J13/00 ,  H04B1/707 ,  H04B7/2618 ,  H04L7/043 ,  H04L7/046

    Abstract: A spread-spectrum transmitter and receiver using code division multiple access with time division multiple access technology for spread-spectrum communications. At a base station, a spread-spectrum transmitter includes a multiplexer (75) for time multiplexing a synchronization-code signal and a plurality of data signals, which may be encoded as a plurality-encoded data signals, to generate a time-multiplexed signal. A chip-code generator (56) generates a chip-code signal which is modulo added with the time-multiplexed signal by an EXCLUSIVE-OR gate (76) to generate a spread-spectrum-time-multiplexed signal. A transmitter (79) transmits the spread-spectrum-time-multiplexed signal over a communications channel. A spread-spectrum receiver at the base station processes a plurality of spread-spectrum signals, received from a plurality of remote units in as time division sequence of spread-spectrum signals, using a despreader circuit (110) to generate a time-division signal. A demultiplexer (115) demultiplexes the time-division signal as a plurality of data signals or as a plurality of privacy-encoded data signals. A remote unit, which may be a handset, includes a despreader circuit (155) for despreading the spread-spectrum-time-multiplexed signal as a time-multiplexed signal. A synchronization-code matched filter (157) detects the synchronization-code signal embedded in the time-multiplexed signal and thereby generates a timing signal. A controller (161) uses the timing signal to generate a control signal. The control signal controls a transmit-receive switch (199) for switching an antenna (198) between the despreader circuit (155) to the transmitter (141) at the remote unit.

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